Spikelet fertility
Spikelet fertility measurement is taken from counts of well developed fertile spikelets in proportion to total number of spikelets on five panicles at harvest. Observed in all species.
| Code | Term | Description |
|---|---|---|
| 1 | Highly fertile | >90% |
| 3 | Fertile | 75-90% |
| 5 | Partly sterile | 50-74% |
| 7 | Highly sterile | <50% to trace |
| 9 | Completely sterile | 0% |
| 999 | Mixture |